State the carat-to-gram conversion.

State the carat-to-gram conversion.

• A. 1 carat equals 0.1 grams
• B. 1 carat equals 0.25 grams
• C. 1 carat equals 0.5 grams
• D. 1 carat equals 0.2 grams

Answer: (D)

Carat is a unit of mass used for gemstones, defined as exactly 200 milligrams, which is 0.2 grams. So to convert, multiply the number of carats by 0.2; for example, 5 carats equal 1 gram, 10 carats equal 2 grams. This is why 1 carat equals 0.2 grams—the standard definition sets that fixed relationship. The other amounts would imply different per-car at masses and aren’t correct. Also, note that carat weight is different from karat purity used for gold.

Carat is a unit of mass used for gemstones, defined as exactly 200 milligrams, which is 0.2 grams. So to convert, multiply the number of carats by 0.2; for example, 5 carats equal 1 gram, 10 carats equal 2 grams. This is why 1 carat equals 0.2 grams—the standard definition sets that fixed relationship. The other amounts would imply different per-car at masses and aren’t correct. Also, note that carat weight is different from karat purity used for gold.